Reports

Modern Graywacke-Type Sands

Science  18 Dec 1964:
Vol. 146, Issue 3651, pp. 1573-1574
DOI: 10.1126/science.146.3651.1573

Abstract

A preliminary study of more than 100 deep-sea cores from abyssal plains has revealed two examples of recent muddy sands of the graywacke type which, together with the microcrystalline matrix, form a bimodal-size distribution sands have a well-sorted framework of quartz, feldspar, and rock fragments which, together with the microcrystalline matrix, form a bimodal-size distribution that is also typical of ancient graywackes. The matrix is considered to be primary.

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